Consider a jacket made of 5 layers of 0.1-mm-thick cotton fabric (k = 0.060 W/m·K) with a total of 4 layers of 1-mm-thick air space (k = 0.026 W/m·K) in between. Assuming the inner surface temperature of the jacket is 25°C and the surface area normal to the direction of heat transfer is 1.1 m:. determine the rate of heat loss through the jacket when the temperature of the outdoors is 0°C and the heat transfer coefficient on the outer surface is 18 W/m2 K.
(a) 6 W
(b) 115 W
(c) 126 W
(d) 287 W
(e) 170 W
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